using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var stopWatch = new System.Diagnostics.Stopwatch();

        // Generate 25000 test cases

        var tests = Enumerable.Range(1, 25000).Select(x => (uint)new Random().Next(0, int.MaxValue));

        stopWatch.Start();

        foreach (var test in tests)

        {

            // Change me to determine which approach to use

            IsPalindromeB(test);

        }

        stopWatch.Stop();

        Console.WriteLine("Duration: " + stopWatch.Elapsed);

​

    }

    protected static bool IsPalindromeA(uint x)

    {

        // Get your string

        var s = x.ToString();

        // Reverse it

        var characters = s.ToCharArray();

        Array.Reverse(characters);

        // If the original string is equal to the reverse, it's a palindrome

        return s == new string(characters);

    }

    protected static bool IsPalindromeB(uint x)

    { 

        // Build your string

        var chars = x.ToString();

        // Iterate through half of the elements

        for (var i = 0; i < chars.Length / 2; i++)

        {

             // If they are ever not equal, then it's not a palindrome

             if (chars[i] != chars[chars.Length - 1 - i])

             {

                  return false;

             }

        }

        // If you've made it through, then you have a palindrome

        return true;

    }

}